欢迎收听电子音频内容《The Formation of New Species新物种的形成》,你可以在线听书也可以下载喜马拉雅APP播放,想收听更多更优质的有声读物小说故事音乐作品,就来喜马拉雅!
Speciation is the process by which new species form. It begins with the isolation of two populations. If two populations are to become sufficiently distinct that interbreeding is difficult or impossible, then there must be relatively little gene flow (migration) between them (because if there were...
With its gene pool isolated, a separate population can follow its own evolutionary course. In the formation of many species, the [#highlight2]initial[/highlight2] isolation of a population seems to have been a geographic barrier. This mode of evolving new species is called allopatric ...
A. species B. populations C. ecosystems D. habitats 相关知识点: 试题来源: 解析 A。进化变化可以导致新物种的形成。选项 B“populations”是种群,不是进化变化的主要结果。选项 C“ecosystems”是生态系统,不是直接由进化变化形成的。选项 D“habitats”是 反馈...
of a New Guinea tribe are two possible social schemes for 5 a common problem, and in so far as he remains an anthropologist he is 6 to a-void any weighting of one 7 the other. He is interested in human behavior, not as it is shaped by one tradition, our own, but as it has ...
这些机制分为两大类:(1)异地物种形成,其中两个种群在地理上相互分离;(2)同域物种形成,两个种群共享相同的地理区域。乍一看,同域物种形成似乎违反了种群隔离的原则,因为物种形成的种群生活在同一地区。然而,与基因流的隔离对物种形成至关重要。尽管这种隔离最常见的可能是由河流等物理屏障造成的,但如果生活在同一...
In 1990, Mitsubishi Electronics was reported to have announced the formation of a team composed entirely of AB workers, thanks to “their ability to make plans”. The belief even affects politics. One former prime minister considered it important enough to reveal in his official profile that ...
soichiro kitamura soil aeration soil and superjacent soil and water conser soil application of f soil beach yangko soil catalase soil cd species soil corrosion soil design soil design protocols soil evaporimeter soil extractor soil fitment soil fixationsoil fix soil formation soil forming processe soi...
thereby preventing population interbreeding.With its gene pool isolated, a separate population can follow its own evolutionary course.In the formation of many species, the initial isolation of a population seems to have been a geographic barrier.This mode of evolving new species is called allopatric...